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Finding the Fourth Proportional to 64,971.66, 89,661.39 and 38,114.61

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Solution

The fourth proportional to 64,971.66, 89,661.39 and 38,114.61 is: 52,598.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.66 : 89,661.39 = 38,114.61 : x
  2. Step 2: Convert to fraction form
    64,971.66/89,661.39 = 38,114.61/x
  3. Step 3: Cross multiply
    64,971.66x = 89,661.39 × 38,114.61
  4. Step 4: Simplify right side
    64,971.66x = 3,417,408,911.91
  5. Step 5: Solve for x
    x = 3,417,408,911.91/64,971.66
  6. Step 6: Final answer
    x = 52,598.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.